Process for preparing high-reactivity isobutene homo- or copolymers

US10968294B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Rosa Corberan Roc · Ludwigshafen, DE
• Klaus Muehlbach · Havelsee, DE
• Thomas Wettling · Schifferstadt, DE
• Sergei V. Kostjuk · Minsk, BY
• Irina Vasilenko · Minsk, BY
• Dmitryi Shiman · Minsk, BY

Key dates

• Filing date: Feb 13, 2017
• Grant date: Apr 6, 2021
• Expiry date: May 31, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per homo- or copolymer chain end of at least 70 mol % which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, said complex comprising, as the donor, a mixture of at least two organic compounds with at least one ether function each.